. >> osgood: mo rocca will unearth some little known chapters of inauguration law. dean reynolds has the latest on the sports tale like none other. we'll say our farewells to dear abby and more. but first the headlines for this sunday morning the 20th of january, 2013. to begin we go straight to washington and bill plant. >> reporter: charlie, never mind that big swearing-in ceremony tomorrow at the capital followed by the luncheon and then the inaugural balls and the parade. the constitution says that the term of the president ends at noon on january 20. and that's why the swearing-in ceremony that will take place here today at the white house is the official one. vice president joe biden has sworn in earlier this morning in his residence at the naval observatory. president obama begins this day at arlington national cemetery. he'll be joined by the vice president for a replaying ceremony honoring the nation's war dead. later chief justice john roberts will arrive at the white house. and at five minutes before noon here in the east, he will administer the oath of o